Running sum

I'm not quite sure if i'm aiming for the impossible, but:
In a matrix, i have time (weeks) as columns, items as rows and qty as detail
and i would like to have a running sum for the columns.
This problems arise because i need to columns to be dynamic.
Any suggestions would be more than welcome
Example:
Records:
Item 1, week 1, qty 5
Item 1,week 2, qty 3
Item 1, week 3, qty 4
Matrix
week 1 week 2 week 3
Item 1 5 8 12I seem to have found the solution (RunningValue(Expression, Function,
Scope)).
Sorry for the inconvenience
"Claus Aaberg" <caa@.phaseone.com> wrote in message
news:%23TPAKwKcEHA.368@.TK2MSFTNGP10.phx.gbl...
> I'm not quite sure if i'm aiming for the impossible, but:
> In a matrix, i have time (weeks) as columns, items as rows and qty as
detail
> and i would like to have a running sum for the columns.
> This problems arise because i need to columns to be dynamic.
> Any suggestions would be more than welcome
> Example:
> Records:
> Item 1, week 1, qty 5
> Item 1,week 2, qty 3
> Item 1, week 3, qty 4
> Matrix
> week 1 week 2 week 3
> Item 1 5 8 12
>sql